<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索添加框 -->
        <el-row :gutter="20"><!--gutter指定栅格之间的间隔 -->
        <el-col :span="8">  <!--span 栅格占据的列数 --> 
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
          <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>

        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe><!-- ：绑定 data 数据源 border添加边框 stripe隔行变色 -->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <!-- 作用域插槽 v-model双向绑定 -->
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch> 
        
          </template>
        </el-table-column>

        <el-table-column label="操作" width="180px">  
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
             <!-- 分配角色按钮 -->
             <el-tooltip  class="item" effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"  
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
    </el-pagination>

    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

       <!-- 分配角色对话框 -->
      <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
      <div>
      <p>当前的用户:{{userInfo.username}}</p>
      <p>当前的角色:{{userInfo.role_name}}</p>
      <p>分配新角色:
      <!-- 角色选择下拉框 v-model：设置用户选中角色之后的id绑定数据 -->
      <el-select v-model="selectedRoleId" placeholder="请选择角色">
      <!-- :label 显示文本，:value 选中值 -->
      <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
      </el-option>
      </el-select>
      </p>
      </div>
      <span slot="footer" class="dialog-footer">
      <el-button @click="setRoleDialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      // 第二种写法  /^\w+@\w+(\.\w+)+$/   \w 单词字符：[a-zA-Z0-9_-]匹配字母或数字或下划线或汉字
      if (regEmail.test(value)) {
        // 合法的邮箱
        return cb()
      }

      cb(new Error('请输入合法的邮箱'))
    }

    // 验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号的正则表达式
      const regMobile =  /^1[34578]\d{9}$/
   // 第二种写法 /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return cb()
      }

      cb(new Error('请输入合法的手机号'))
    }

    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2
      },
      userlist: [],
      total: 0,

      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,

      //控制修改用户对话框的显示与隐藏
      editDialogVisible:false,

      //控制分配角色对话框的显示与隐藏
      setRoleDialogVisible:false,

      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
     
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '用户名的长度在3~10个字符之间', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6,  max: 15, message: '密码的长度在6~15个字符之间', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      
      //查询到的用户信息对象
      editForm:{
        username: '',
        email: '',
        mobile: ''
      },
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入用户邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入用户手机', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },

    //保存正在操作的那个用户信息
    userInfo:{},
    //保存所有的角色信息
    rolesList:[],
    //保存用户选中的角色id
    selectedRoleId:''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败！')
      }
      this.userlist = res.data.users
      this.total = res.data.total
      console.log(res)
    },
    
    // 监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      // console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码值改变的事件
    handleCurrentChange(newPage) {
     // console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },

    // 监听 switch 开关状态的改变
    async userStateChanged(userinfo) {
      console.log(userinfo)
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      )
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败！')
      }
      this.$message.success('更新用户状态成功！')
    },
   
    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },

    //监听修改对话框的关闭事件
    editDialogClosed(){
      this.$refs.editFormRef.resetFields()
    },
    
    // 点击按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        // 可以发起添加用户的网络请求,请求方法：post   请求路径：users  请求参数：addForm
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败！')
        }
        this.$message.success('添加用户成功！')
        // 隐藏添加用户的对话框
        this.addDialogVisible = false
        // 重新获取用户列表数据
        this.getUserList()
      })
    },

    //显示编辑用户的对话框
    async showEditDialog(id)
    {
     // console.log(id)
       const {data:res}= await this.$http.get('users/'+id)
       if(res.meta.status!=200)
       {
       return this.$message.error('查询用户信息失败！')
       }
       //console.log(res)
       this.editForm=res.data
       this.editDialogVisible=true
    } ,
    
    //修改用户信息并提交
    editUserInfo() {
    this.$refs.editFormRef.validate( async valid=>{
     if(!valid)return
      const{data:res}= await this.$http.put('users/'+this.editForm.id , { 
       email:this.editForm.email,
       mobile:this.editForm.mobile
       })
       if(res.meta.status!=200)
       {
         return  this.$message.error('更新用户信息失败!')
       }
       //关闭对话框
       this.editDialogVisible=false
       //刷新
       this.getUserList()
       //修改成功
       this.$message.success('更新用户信息成功！')
      })
    },
    
    //根据id删除对应的用户信息
   async  removeUserById(id){
    //console.log(id)
    //询问用户是否删除
   const confirmResult= await this.$confirm ('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>{
          return err
        })
      if(confirmResult!=='confirm'){
        return this.$message.info('已取消删除')
      }
      //console.log('已确认删除')
      const {data:res} = await this.$http.delete('users/'+id)
      if(res.meta.status!==200){
        return  this.$message.error('删除用户失败！')
      }
      this.$message.success('删除用户成功！')
      this.getUserList()
    },
    
    //展示分配角色的对话框
   async setRole(userInfo){
      //保存起来以供后续使用
      this.userInfo = userInfo;
      //获取所有的角色信息，以备下拉列表使用
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) 
      return this.$message.error('获取角色列表失败') 
      this.rolesList = res.data;
      //展示分配角色对话框
      this.setRoleDialogVisible = true;
    },

    //分配角色
    async saveRoleInfo(){
      //判断用户是否选择了需要分配的角色
      if(!this.selectedRoleId){
        return this.$message.error('请选择需要分配的角色')
      }
      //发送请求完成分配角色的操作
      const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectedRoleId})

      if(res.meta.status !== 200)
        return this.$message.error('分配角色失败')

      this.$message.success('分配角色成功')
      this.getUserList();
      //关闭对话框
      this.setRoleDialogVisible = false
    },

    setRoleDialogClosed(){
      //当关闭对话框的时候，重置下拉框中的内容
      this.selectedRoleId = ''
      this.userInfo = {}
    }

    
  }
  }

</script>

<style lang="less" scoped>
</style>
